As 20.0 g of solid NH4 NO3 are dissolved in water to make 100.0 cm3 of solution, the temperature of the solution changes from 22.3o C to 7.0 o C. Calculate the enthalpy of dissolution of NH4 NO3 (in kJ mol−1 ). Assume that the density and specific heat of the solution are equal to those of pure water (d = 1.00 g cm−3 , c = 4.184 J g−1 K−1 ) and the mass of the solute is significant. A) −30.7 B) −20.7 C) +26.7 D) −26.7 E) +30.7
As 20.0 g of solid NH4 NO3 are dissolved in water to make 100.0 cm3 of solution, the temperature of the solution changes from 22.3o C to 7.0 o C. Calculate the enthalpy of dissolution of NH4 NO3 (in kJ mol−1 ). Assume that the density and specific heat of the solution are equal to those of pure water (d = 1.00 g cm−3 , c = 4.184 J g−1 K−1 ) and the mass of the solute is significant. A) −30.7 B) −20.7 C) +26.7 D) −26.7 E) +30.7
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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As 20.0 g of solid NH4 NO3 are dissolved in water to make 100.0 cm3 of solution, the
temperature of the solution changes from 22.3o C to 7.0 o C. Calculate the enthalpy of dissolution
of NH4 NO3 (in kJ mol−1 ). Assume that the density and specific heat of the solution are equal to
those of pure water (d = 1.00 g cm−3 , c = 4.184 J g−1 K−1 ) and the mass of the solute is
significant.
A) −30.7
B) −20.7
C) +26.7
D) −26.7
E) +30.7
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